Ballast-tank for ships.



'Patented Aug, 31, 1909.

citizen of the 'United States,

'UNITED .sTArns PATENTOFFICE.

GEORGE smrson, F eUrNcY, nassacnosn'rrs, AssIGnon ro Fons nIvEB SHIP'BUnm'me comunal, A c oBronnTroN, .or nAssAcnUsn'T'rs.-

B ALLASTJMNK Fon singes.

Application med Aprilia, 1eos." s'erial ama'zee;

Be it known that I, Gnoncn SIMrsoN,ja

Quincy, in the count'yof Norfolkand State of Massachusetts, have'invented an Im*- provement 1n Ballast-Tanks for Ships, lof

" which the following description, in connecl tion with. the-accompanying drawings,- is "a speclfica'tron, like lettersonv 10.

4 the ldrawings representmgllke parts. 1

.The presentiinvention relates to ballast tanks for' ships, and isembodied in a novel construction'. and arrangement of the tanks,

wherebythesupports forthe tank walls are wholly internal y arranged, andthe tanksso disposed as to interfere tothe least possible .extent withthe disposal 'of the cargo;

The, tanks may be arranged, in accordance with the' invention, either-longitndinally along the inner sides 'of the ship, or trans-"j versely,.in the` latter case eachtank. preferablyresting upon the top of-oneofthe transverse bulkheadsl In .either construction, the trainingfor thewalls ofthe tank vat erably arranged with sloping walls resent# 111g asmooth surface' to thefhold whichdoes not interfererwith the stowageofthe cargo,

' and-in shippingcoal, for'example, is o f use in distributing coal inthe hold and obviat;

' ing the necessity of trimming.'

Figure `1 's a side elevationl of acargo" l boat showing 'the locationofthe'tanks; Fig.

2 is a plan view of the same; Fig. 3 is a lon-y gitudinal section, online w3 of Fig. .2,jon an enlarged scale; and Fig. Ltis a transversesection, showing the construction of a tank 45. tanks may belocatedbelow the deckb, the

larranged along the lside `of the ship.

deck ythus forming the yto'pof the tank which preferably extends acrossthe ship betweenl adjacenthatch'combings c. The outer wallsd of the,tanksfare vinclined inwardly from top to bottom, as indicated, and theentire su porting frame work-.forthetankwalls is Ilocated within thetank 'so that the tanks I which are located between adjacent hatchesresiding .in

' cfmdo not in any way interfere with the loading or removalothe-cargo.A

In'the construction shown, the side plates or ywalls al of. the tanksaresupported lby internal .ribs d2 strengthened by vertical -and horizontalbraces d3- and d4, and the weight of the; tank, as-shown, is mainlysupported Hnodication shown. in Figxl, theltanks are .bniltlengthwise ofthe vessel, the side plates ofthe hullforminoone wall ofthe tank,

toward the side plates-e, `thus bearing a reofthe hull plate -@fand thestructure .is -stre r 1gthe'ned .byineans of inclined braces di whichextend from the ribs adjacent to the wallplate 134 to brackets d locatednear the, top lof the tankand .secured to the ribs, f2 and theltransverse decklsupportingmembers extend theentire'length of' the cargospace,

desired, tanksl of this 4 description located lengthwiseof the 'ship maybe 'combined withtransversetanks, oreither may be used separately.

maybe l provided wlth internal "walls or swash-plates d","these wallsconsisting of plates extending across the tank and pro- :motion offtheship.l

Claims. "1 A ballast the top of the cargo space 'of the ship and within.the hull 4 and having. its inner wall which is exposedl inl said cargospace smooth and lobstructionless,fsaid .wall being hungv .a-.raming allof which is located wholly vin the interior :of -tl'1e.t'ank, lsaidframing into be connected with the framing 'of the ship,

while the' otherY wall. 031 slopes downward f3, The tanks'constructedginthis way may f videdlwith openings d8 for lightening and. access, vtheplates, however, preventing Inaterial displacement of the water due tothe Specication 0i Letters .Patenti 'Ptellfled AllgLSL 1909.

by the bulk-headiframework a. -In the lation4 to"v the cargo --spacesimilar to -that described -in connection. with the transverse tanks. Inthis construction, the tanks are supported upon brackets f secured toribs f2 which'extend vertically'along the inner side'- being Vlocatedbetween the sides of the f hatchescz andtheggunwale of the ship. If

'As indicatedin Figs. 2 andt, the tanks i I tankfor ships, located nearfrom the hatch combing, and provided with minding braces fixed t'saidWan .and adapted "2. AA shipphavingprism-shaped or tr1`-vangulaire-shaped ballast tanks,'located length? wise of Athefsliip andhaving suitablefraining or stii'enig" all of which is arranged WhollyWithin the tank, whereby the sur ace of the inner Wall of the tankexposed in the cargo space is smootlnsaid inner Wall beinghung :from thehatch combing, and said framing including -supporting braces connectedat one end with said Wall and at the opposite end with the framing ofthe ship'.

3. Ballast tanks for ships, having atopside fore and aft arranfrementand'provided with framing or stiening members all located wholly insideof the tanks, theinner '.walls of the tanks .presenting smooth exteriosto the Vessels hold, said inner Walls being hung from the hatchcombino,and '15 said framing including supporting races rigidly xed to saidwallsand adapted to be connected with the framing of the shi Intestimonywhereoffl have signe my name to this specication in thepresence of .20 two subscribing witnesses.

o GEORGE SIMPSON.

' Witnesses: I

JAs. J. MALONEY, HENRY J. LIvERMoRE.

